Tomorrow is Midsummer's Eve! (Summer Solstice)
This is celebrated in Scandinavia (big, big holiday) and in the Baltic states and Belarus too.
What about in Russia?
Here is a Belarussian Midsummer performance, clearly a fire is part of their celebrations. I like it!
In Sweden our traditions includes making a really tall maypoles dressed in leaves and flowers, dancing, having dinner with family and friends, and for many - getting spectacularly drunk in the evening.